steal syndrome
Phenomenon where blood flow is diverted from one vascular territory to another, causing ischemia.
Full Definition
Steal syndrome occurs when blood flow is preferentially diverted from one vascular territory to another area of lower resistance, resulting in relative ischemia of the original territory. This phenomenon can occur in various anatomical locations including subclavian steal, coronary steal, and dialysis access-related steal. The syndrome develops due to pressure gradients that favor flow toward areas of decreased resistance, often exacerbated by exercise or increased demand. Clinical manifestations depend on the affected vascular bed and may include neurological symptoms, angina, or limb ischemia.
Usage
Usage note: Always specify the anatomical location of the steal phenomenon.
In Context
- "The patient developed steal syndrome following arteriovenous fistula creation for dialysis access." — Vascular surgery consultation
- "Exercise-induced symptoms suggested coronary steal phenomenon in this patient with collateral circulation." — Cardiology evaluation